I can tell you what book NOT to get haha. Don't get Tarot Made Easy by Nancy Garen. My mom has that one, and she uses it to look up card meanings for her readings. However, she is not a serious tarot student at all, and as someone who reads seriously myself, I would advise you stay away from it. I can't even begin to tell you how many times I've looked through this book and found myself disagreeing with the things she's written, namely some wonky card interpretations (for example, according to Ms. Garen, the Sun is a somewhat negative card to get, same with Two of Cups), and that reversals don't mean anything (readers differ on this one, but I'm inclined to believe they do matter).